Roll Pass Design Problems
and LINEBOW  Solutions

  

About the acronyms used:

CBM = Continuous Bar Mill
BOX = box pass
OV = Oval
DI = Diamond
SQ = Square
FR = False Round
RD = Round.

       PROBLEM:

Given a billet out of the furnace and a finished round, design roll passes for a CBM with a 2-stand roughing sequence.
– SOLUTION: DESFILE or DESMILL (output to disk, with extensions .LIN and .SYN)

       PROBLEM:

Given a square out of stand #5 and a finished round, design roll passes for a CBM with a 5-stand roughing sequence (roughing sequence excluded).
– SOLUTION: DESFIVE (output to disk with extension .VIN)  

       PROBLEM:

Given a billet and a finished round (or an intermediate round), design roll passes for a CBM with an even number of stands (pass 1 is a BOX, or a DI, pass 2 is a SQ, pass 3 is an OV, pass 4 is a RD; from here to final round use only OV-RD sequences).
– SOLUTION: 2ROUND (output to disk with extension .RD2)  

       PROBLEM:

Given a billet and a finished round (or an intermediate round), design roll passes for a CBM with an odd number of stands (pass 1 is a BOX, pass 2 is an OV, pass 3 is a RD; from here to final round use only OV-RD sequences).
– SOLUTION: 3ROUND (output to disk with extension .RD3)  

       PROBLEM:

Given a CBM like that described for 3ROUND (3 + 2xN stands), design roll passes for N rounds (with height = nominal diameter) whose diameters you must assign. In other words, set your mill to obtain N round products by simply eliminating pairs of stands. The Nth pass is a "final round", not a "finishing round".
– SOLUTION: ALLROUND (output to disk with extension .ALL)  

       PROBLEM:

Given an intermediate section (SQ, FR or RD) and a finished round, design roll passes for the final part of the CBM.
– SOLUTION: BYFILE or BYMILL (output to disk, with extensions .BYF and .BAR)

       PROBLEM:

Given an intermediate section (RD from 2ROUND or 3ROUND) and a finished RD (or the cross sectional area of a RD after the stretching sequence), design roll passes for the final part of the CBM.
– SOLUTION: ROUNDBY (output to disk with extension .RDB)

       PROBLEM:

Given a round billet and a finished round (or an intermediate round), design roll passes for a CBM with an even number of stands (pass 1 is an oval, pass 2 is a round; from here to final round use only OV-RD sequences).
– SOLUTION: RDBILLET (output to disk with extension .RBT)  

       PROBLEM:

Given an entry bar, a single stand and a desired exit bar, design the proper roll pass (10 different deformations considered: e.g. "SQ into DI" or "OV into FR").
– SOLUTION: SINPASS (output to screen)

       PROBLEM:

Given an entry bar (SQ, FR or RD), two stands and a desired exit bar (SQ, FR or RD), design the proper roll passes (10 different sequences considered: e.g. "SQ-OV-FR" or "FR-OV-RD").
– SOLUTION: TWOPASS (output to screen)

       PROBLEM:

Given a finished square bar, design the proper finishing sequence (SQ-DI-SQ).
– SOLUTION: 2FILE (output to disk with extension .TWO)

       PROBLEM:

Given a finished square bar, design the proper finishing sequence (SQ-DI-SQ).
– SOLUTION: 2FINS (output to screen)
[Psst! You can get 2FINS for free! Just click HERE.]

       PROBLEM:

Given a wire rod block with fixed gear ratios and a finished round, design the proper roll passes. (Click here to read Stahl und Eisen about this.)
– SOLUTION: BYBLOCK – options a and b (output to disk with extension .WRB) 

       PROBLEM:

Given N round diameters, design gearing and roll passes for a 2xN-stand wire rod block.
– SOLUTION: BYBLOCK – option c (output to disk with extension .WRB) 

       PROBLEM:

Given a flat to be rolled between flat-barrel rolls, calculate final shape and rolling loads.
– SOLUTION: ROMILDA (output to screen)
[Psst! You can get ROMILDA for free! Just click HERE.]

       PROBLEM:

Given a flat to be edge-rolled between grooved rolls, calculate final shape and rolling loads.
– SOLUTION: EDGER (output to screen)
[You can also get EDGER for free! Just click HERE.]

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